249results about How to "Data transmission security" patented technology

The invention discloses a security protection method of communication data of a special electricity public network, which provides secure and reliable data communication for the data communication ofthe special electricity public network by adopting the technical means of network isolation, right control, identity authentication and transmission encryption, realizes the purpose of securely usingthe public network for communication at any time and in any places without making any change to the application environment or software. In the process of application, a calling telecontrol communication security gateway (7) and a called telecontrol communication security gateway (9) are connected to a public network (8) by dialing; an encrypted public network communication channel is establishedfor the communication between a communication front-end processor (6) and a remote RTU (10); and the data is connected with the telecontrol communication security gateway (7) from the communication front-end processor (6) through a serial port or network, connected with the public network (8) through the calling telecontrol communication security gateway (7), connected with the called telecontrolcommunication security gateway (9) from the public network (8), and then connected with the remote RTU (10) through the serial port or the network. The invention can be widely applied to the field ofsecurity protection of the communication data of the public network.

The invention concerns secure data transfer from a first radio communication device of a first party to a second radio communication device. A random first symmetric key is generated at the first terminal device. User data of the first terminal device is encrypted with the first symmetric key. The first symmetric key is encrypted with a public key of a third party. The encrypted first symmetric key is sent from the first terminal device to the second terminal device via a transfer device. The encrypted first symmetric key is decrypted at the second terminal device by utilizing a secret key associated with the public key and comprised in a security device of the third party. The encrypted user data is sent from the first terminal device to the second terminal device via the transfer device. The encrypted user data is decrypted at the second terminal device with the first symmetric key.

An information processing system and method using an encryption key block sets sub-trees classified based on data processing ability of the devices (capability) in a key tree in which respective keys are corresponded to a root, nodes and leaves of a tree in which a plurality of devices are constituted as the leaves, generates a sub-enabling key block which is effective for an entity in a managing subject of each sub-tree (entity), and generates an enabling key block decodable only by the entities having common capability. Also, an information processing system and method using an encryption key block manages a partial tree of a key tree (sub-tree), generates a sub-enabling key block based only on a key set corresponding to nodes or leaves included in the sub-tree, and generates an enabling key block decodable only by selected entities by using the sub-enabling key block. Thus, it is possible to generate and distribute an enabling key block corresponding to data processing ability of a device and to manage devices by dividing a hierarchical key tree structure.

The invention belongs to the field of wireless sensor network communication, in particular to a ZigBee network wireless monitoring system combined with the general packet radio service (GPRS). In order to overcome the defects existing in wired monitoring system data transmission and to satisfy urgent demands for wireless monitoring systems by certain special environment, a wireless monitoring system combined with GPRS networks and ZigBeenetworks is provided. The ZigBee network monitoring system combined with the GPRS specifically comprises a ZigBee network data collecting layer, a GPRS network data transmission layer and a monitor center, wherein a personal computer (PC) serves as a management layer in the monitor center. The ZigBee network monitoring system combined with the GPRS is capable of guaranteeing reliable and real-time transmission of data and reducing investing and maintaining cost, good in communication quality, low in power dissipation and capable of reducing shortcomings existing in long distance communication.

The invention refers to the technical field of coding and decoding of a two-dimensional code, and particularly relates to a method for generating and verifying a dynamic two-dimensional code. The method for generating and verifying the dynamic two-dimensional code includes the following steps: generating the dynamic two-dimensional code according to original data input by a user and encrypting the data content of the dynamic two-dimensional code; applying a mobile terminal to scan the dynamic two-dimensional code and performing time verification, data decryption, inspection of data integrity and hardware information matching on one frame of obtained dynamic two-dimensional code data; if the whole inspections are passed, performing subsequent normal flows; otherwise, giving up the data. The dynamic two-dimensional code makes that every two-dimensional code image is dynamically encrypted and generated by using different secrete keys respectively within a period of time on the basis of an original QR Code; its content is encrypted through a security algorithm according with the national password standard and then mixed, so that the data transmission is safer.

The invention discloses a self-adaptive cruise control system of a vehicle. The self-adaptive cruise control system comprises a self-adaptive cruise sensing and controlling device, and a FlexRay bus which is connected with the self-adaptive cruise sensing and controlling device, an engine management system, a transmission control unit, an electronic stability program unit and an instrument unit. The self-adaptive cruise control system disclosed by the invention can be used for enhancing the response speed of an ACC (adaptive cruise control) system, and improving the sensitivity and safety of cruise driving.

A method for transmitting data frames between a master device and one or more slave devices via a bus system having at least one request line for transmitting request data frames from the master device to the slave devices, a response line for transmitting response data frames from the slave devices to the master device and at least one selection line for activating the slave devices, the request data frames and the response data frames being transmitted together with at least one address bit for addressing one of the slave devices, the useful data bits and at least one length-indicating bit for indicating the data frame length.

An information processing system and method using an encryption key block sets sub-trees classified based on data processing ability of the devices (capability) in a key tree in which respective keys are corresponded to a root, nodes and leaves of a tree in which a plurality of devices are constituted as the leaves, generates a sub-enabling key block which is effective for an entity in a managing subject of each sub-tree (entity), and generates an enabling key block decodable only by the entities having common capability. Also, an information processing system and method using an encryption key block manages a partial tree of a key tree (sub-tree), generates a sub-enabling key block based only on a key set corresponding to nodes or leaves included in the sub-tree, and generates an enabling key block decodable only by selected entities by using the sub-enabling key block. Thus, it is possible to generate and distribute an enabling key block corresponding to data processing ability of a device and to manage devices by dividing a hierarchical key tree structure.

The present invention relates to a vehicle mounted video monitoring system and monitoring method thereof. The invention adopts a symmetric structure, one set of system host computer, a liquid crystal touch screen display and an infrared video camera are respectively provided in the beginning and the end driver rooms of the train. The two system host computers are identical, three 360-degree static wide angle cameras are respectively mounted in equidistance at the top of each compartment, a set of video processing apparatus and network device is mounted in the wire distributing groove, data transmission between compartments adopts the wired connecting passage apparatus or wireless connecting passage apparatus, each host computer can perform data transmission between every video camera, and the video camera is connected with video processing and storage apparatus (SDVR). The invention has advantages of no blind zone of compartment monitoring, seamless connection between the automobile door and the platform, safe and reliable data transmission; friendly man-machine interface, facilitating operation, easy operation and maintenance; and system reserved interface to TCMS and PIS.

Wide area networks (WAN) storing service intermediate parts based on the mobile caching technique, pertains to data accessing management intermediate parts in the computer network memory technique field, which resolve problems of slow data transmission and bad safety of IPv6 WAN distributed storage system. The present invention includes data transmission, mobile caching and security modules, wherein, the data transmission module includes metadata management, service request, and service processing sub-modules, as well as request monitoring and request handling sub-modules; the mobile caching module includes a mobile caching selection sub-module and a mobile caching transmission sub-module; the security module includes a tripartite safety authentication sub-module and a authority detection sub-module. The invention realizes a compact and quick response from customer nodes to storage systems; makes full use of high performance and high-speed network band-width between storing service nodes; during data transmission, dynamically selects optimal storing service nodes for data as mobile caching; has a comprehensive and practical storage service function, and fast and secure data transmission performance; and ensures high-speed and security of network data moving.

The invention discloses an encryption/decryption method and a system for data transmission. The method comprises the steps as follows: a client side sends a login authentication request message that is encrypted through an initial key to a server side; the server side receives the login authentication request message, performs the authentication matching after decryption, and generates a dynamic key; the server side generates and sends a login result message; the client side receives the login result message and acquires the dynamic key; the client side and the server side combine the initial key with the dynamic key so as to generate a communication key; and the communication key is utilized to encrypt/decrypt data between the client side and the server side. The system comprises: a login authentication unit, a first communication unit and a communication key generating unit all positioned on the client side; and a second communication unit, an authentication matching unit, a dynamic key generating unit, a login result unit and the communication key generating unit all positioned on the server side. Therefore, the problem that an interact protocol between the client side and the server side is easy to be decoded can be solved.

The invention discloses an air control system for a micro civil unmanned plane. The air control system comprises an air control platform, a control box and an application end report system. A multi-frequency multi-stage communication connection mode is employed for communication between the air control platform and the control box, the application end report system takes a notebook computer, a flat computer or an intelligent handset as an operation carrier, connection with the control box can be realized through USB, WiFi and Bluetooth modes, the report information is transmitted by the application end report system through a communication module of the control box to the air control platform, report approval is carried out by the air control platform through integrating the report information of a database, the third party and other users, the approval result information is fed back, the feedback information is received by the control box and is stored, and the feedback information is fed back and is sent to the application end report system. According to the air control system, plenty of micro unmanned planes flooding into the market are taken as objects, the civil unmanned plane control system having properties of low cost and high performance is developed, and the purpose of air control on the micro unmanned planes in good or bad states is realized.

The invention relates to the field of grid GIS (Geographic Information System), in particular to a method for synchronously updating data based on grid GIS. The method comprises the following steps of: (1) updating the spatial data of a node, and writing into an update data table in a node database; (2) regularly accessing the update data table in a node database by a local daemon process, and reading and sending the update data to a message server in the existence of update content; (3) receiving the update data by the message server, reorganizing the sent update data table, writing into a data table of the message server, releasing an update message, and sending the message to nodes subscribing relative subjects; and (4) regularly accessing the message server to receive the message by are ceiving end, and updating the local data table according to the acquired data table of the message server. The method for synchronously updating data based on grid GIS provides a method for universally, rapidly and synchronously updating the node data in a distributed heterogeneous system.

A quantum seal stamping and verifying system provided by this invention comprises a seal client, a quantum gateway of the seal client, a server quantum gateway, a CA (Certification Authority) server and a seal server; the seal client is connected with the quantum gateway of the seal client through a classical channel; the seal server and the CA server are connected with the quantum gateway of the seal server through the classical channel; the quantum gateway of the seal client and the quantum gateway of the seal server are connected with a quantum channel through the classical channel. The invention provides a quantum seal stamping and verifying system, and a configuration, a stamping process and a verifying method thereof, wherein the system is difficult to be cracked and is capable of greatly improving the validity and the authority of the seal.

The invention relates to the technical field of coding and decoding of two-dimensional codes, in particular to an automatic tell machine money withdrawing method based on a dynamic two-dimensional code. The method comprises the steps that 1, a dynamic two-dimensional code image is displayed on an automatic tell machine; 2, the dynamic two-dimensional code image displayed on the automatic tell machine is scanned through a mobile phone bank app on a mobile phone, and transaction data information is sent to a mobile phone bank server; 3, the mobile phone bank server transmits the transaction data to a dynamic two-dimensional code verification server; 4, the dynamic two-dimensional code verification server conducts data verification, decoding and time confirmation; 5, sending a data message to a prepositive server of the automatic tell machine in a packaged mode after a user inputs a corresponding bank card password into the automatic tell machine; 6, the prepositive server of the automatic tell machine feeds a responding message back, money comes out if the feedback process is normal, and a prompt message comes out to end the transaction otherwise. Compared with existing static two-dimensional money withdrawing processes, the dynamic two-dimensional code verification technology has the advantage that a more complicated safety mechanism is adopted, and therefore the financial safety of the user is better guaranteed.

A method and an apparatus for data transfer in a network having at least two data processing units that exchange messages via the network are described, the exchanged messages having a logical structure in accordance with the CAN specification ISO 11898-1, coding of the bits for at least one first predefinable region within the exchanged messages being accomplished according to the method in accordance with the CAN standard ISO-11898-1, and such that when a switchover condition exists, coding of the bits for at least one second predefinable region within the exchanged messages is accomplished according to a method departing from the CAN standard ISO 11898-1.

The invention relates to the technical field of encoding and decoding two-dimension codes, in particular to a third-party account ATM (automatic teller machine) withdrawing method based on dynamic two-dimension codes. The method comprises the following steps that a user can choose a third-party organization no-card withdrawing function of the dynamic two-dimension codes on an ATM, the ATM can display dynamic two-dimension code images, the user can log in third-party organization APP application programs to scan the dynamic two-dimension codes and send transaction data information to a third-party organization server, the third-party organization server can transmit the transaction data to a dynamic two-dimension code checking server, the dynamic two-dimension data checking server can check data and finally returns the transaction information to the third-party organization server, and the third-party organization server can check the legality of the transaction information and then checks the transaction information again. When the transaction information is not legal, transaction is refused and finishes. Compared with an existing static two-dimension code withdrawing program, a dynamic two-dimension code checking technique utilizes a more complex security mechanism to guarantee financial security of the user.

The invention discloses a sea-gas coupled real-time observation buoy system based on Beidou satellite and Iridium satellite double-satellite communication. The sea-gas coupled real-time observation buoy system comprises a sea-gas coupled observation sensor unit, a data collecting communication control unit, an anchoring unit, a buoy body platform, a power supplying unit and a data processing center. The buoy data collecting communication control unit adopts a Beidou satellite system to transmit conventional block method sea-gas flux, upper-layer sea current profile and buoy operation state parameters which have high requirements on data safety and low requirements on the communication quantity, and adopts an Iridium satellite system to transmit high frequency eddy related and high-resolution seawater skin surface temperature profile data which have high requirements on the communication quantity. A buoy can synchronously observe turbulence flux parameters of an eddy-related method of amovable platform, flux parameter of a block method, the seawater 0-1.0 m high-resolution skin surface temperature profile and the 0-70 m upper-layer sea current profile in real time in real time. Thesea-gas coupled real-time observation buoy system is suitable for being released in deep and open sea, and has the characteristics of diverse sea-gas interface observation parameter, safe data transmission and the like.

The present invention discloses a firewall/ subnet penetration method based on the internal network node transmission technology; the present invention comprises three modules of a Proxy module, a Client module and a Server module; the Proxy module is mainly responsible for collecting the requirements of users and transmitting the requirements to the Client module; the Client module is mainly responsible for establishing connection with the Server module and transmitting the requirements from the Proxy module; the Server module is mainly responsible for actively establishing the connection thewith Client module and processing the requirements transmitted by the Client module to obtain and transmit the corresponding resources. The present invention utilizes the present protocol and the platform to effectively reduce the cost for the penetration of firewall/subnet and realize safe service and data transmission.

The invention relates to a remote access gateway surpassing NAT based on a P2P-VPN technology. The gate is based on the internet technology, combines embedded system application, and establishes point-to-point tunnel connection with client software which works on a terminal under the assistance of a server on a public network through a virtual VPN network technology; once the connection is established, the server on the public network does not participate in the communication between the P2P-VPN gateway and the client software, and the client software and the P2P-VPN gateway are in real P2P connection, thereby realizing the surpassing of NAT in the network and providing a bridge between remote access and control for a user, so that the user realizes the remote access of information like media and data; and compared with the prior art, the gateway has the advantages of stable performance, wide scope of adaptable networks and strong NAT surpassing capability, can realize non-computer on-duty service and can construct cross-regional internal network with low cost without the address of the public network.

The invention requests to protect an electronic evidence storage method based on a block chain smart contract, and the method comprises the steps: carrying out the evidence storage through the smart contract by a evidence storage person, carrying out the query of evidence information through the smart contract by a verification person, carrying out the evidence downloading through the smart contract by a researcher, and carrying out the uploading of an evidence analysis result through the smart contract. The smart contract is a key logic module for realizing the method and exchanges data withthe block chain, so that the integrity, the verifiability and the tamper resistance of the electronic evidence are ensured. And meanwhile, all data operations are recorded on the block chain, so thatthe traceability of the electronic evidence is realized.